int setMessageQueueBlockingMode(MessageQueue* messageQueue, bool activate)
{
messageQueue->attributes.mq_flags = (activate) ? 0 : O_NONBLOCK;
if (mq_setattr(messageQueue->mq_des, &messageQueue->attributes, NULL) == -1)
{
perror("\n\rmq_setattr failed !!!\n");
switch(errno)
{
case EBADF:
perror("The descriptor specified in mqdes is invalid.\n");
break;
case EINVAL:
perror("newattr->mq_flags contained set bits other than O_NONBLOCK.\n");
break;
default :
perror("Unknown error\n");
break;
}
return -1;
}
return 0;
}
int
main(void)
{
struct mq_attr attr;
(void) close(0);
char *name;
if (asprintf(&name, "/strace-mq-%u.sample", getpid()) < 0)
perror_msg_and_fail("asprintf");
if (mq_open(name, O_CREAT, 0700, NULL))
perror_msg_and_skip("mq_open");
printf("mq_open(\"%s\", O_RDONLY|O_CREAT, 0700, NULL) = 0\n", name + 1);
if (mq_getattr(0, &attr))
perror_msg_and_skip("mq_getattr");
printf("mq_getsetattr(0, NULL, {mq_flags=0, mq_maxmsg=%lld"
", mq_msgsize=%lld, mq_curmsgs=0}) = 0\n",
(long long) attr.mq_maxmsg,
(long long) attr.mq_msgsize);
if (mq_setattr(0, &attr, NULL))
perror_msg_and_skip("mq_setattr");
printf("mq_getsetattr(0, {mq_flags=0, mq_maxmsg=%lld"
", mq_msgsize=%lld, mq_curmsgs=0}, NULL) = 0\n",
(long long) attr.mq_maxmsg,
(long long) attr.mq_msgsize);
if (mq_unlink(name))
perror_msg_and_skip("mq_unlink");
printf("mq_unlink(\"%s\") = 0\n", name + 1);
puts("+++ exited with 0 +++");
return 0;
}
CAMLprim value
caml_backpack_mq_setattr(value val_mq, value val_flags)
{
CAMLparam2(val_mq, val_flags);
struct mq_attr attr = {
.mq_flags = caml_convert_flag_list(val_flags, mqueue_flags)
};
if (mq_setattr(Int_val(val_mq), &attr, NULL) == -1)
uerror("mq_setattr", Nothing);
CAMLreturn(Val_unit);
}
CAMLprim value
caml_backpack_mq_send(value val_mq, value val_buff, value val_ofs,
value val_len, value val_prio)
{
CAMLparam5(val_mq, val_buff, val_ofs, val_len, val_prio);
if (mq_send(Int_val(val_mq), &Byte(val_buff, Long_val(val_ofs)),
Long_val(val_len), Int_val(val_prio)) == -1)
uerror("mq_send", Nothing);
CAMLreturn(Val_unit);
}
int main(void)
{
mqd_t mqdes;
struct mq_attr m1;
struct mq_attr m2;
mq_setattr(mqdes, &m1, &m2);
return 0;
}
void test_mq_setattr_prototype(void)
{
mqd_t mqdes;
struct mq_attr mqs, omqs;
int err;
err = mq_setattr(mqdes, &mqs, &omqs);
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
struct mq_attr omqstat, mqstat, nmqstat;
int unresolved = 0;
int failure = 0;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t) - 1) {
perror("mq_open() did not return success");
return PTS_UNRESOLVED;
}
memset(&mqstat, 0, sizeof(mqstat));
memset(&omqstat, 0, sizeof(omqstat));
memset(&nmqstat, 0, sizeof(nmqstat));
if (mq_getattr(mqdes, &omqstat) == -1) {
perror("mq_getattr() did not return success");
unresolved = 1;
}
if (mq_unlink(mqname) != 0) {
perror("mq_unlink()");
return PTS_UNRESOLVED;
}
nmqstat.mq_flags = MQFLAGS;
nmqstat.mq_maxmsg = MQMAXMSG;
nmqstat.mq_msgsize = MQMSGSIZE;
nmqstat.mq_curmsgs = MQCURMSGS;
if (mq_setattr(mqdes, &nmqstat, &mqstat) != 0) {
failure = 1;
}
if ((omqstat.mq_flags != mqstat.mq_flags) ||
(omqstat.mq_maxmsg != mqstat.mq_maxmsg) ||
(omqstat.mq_msgsize != mqstat.mq_msgsize) ||
(omqstat.mq_curmsgs != mqstat.mq_curmsgs)) {
failure = 1;
}
mq_close(mqdes);
mq_unlink(mqname);
if (failure == 1) {
printf("Test FAILED\n");
return PTS_FAIL;
}
if (unresolved == 1) {
printf("Test UNRESOLVED\n");
return PTS_UNRESOLVED;
}
printf("Test PASSED \n");
return PTS_PASS;
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
struct mq_attr mqstat, nmqstat;
int unresolved = 0;
int failure = 0;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t)-1) {
perror("mq_open() did not return success");
return PTS_UNRESOLVED;
}
memset(&mqstat,0,sizeof(mqstat));
memset(&nmqstat,0,sizeof(mqstat));
if (mq_getattr(mqdes, &mqstat) == -1) {
perror(ERROR_PREFIX "mq_getattr");
unresolved = 1;
}
mqstat.mq_maxmsg = mqstat.mq_maxmsg + 1;
mqstat.mq_msgsize = mqstat.mq_msgsize + 1;
mqstat.mq_curmsgs = mqstat.mq_curmsgs + 1;
if (mq_setattr(mqdes, &mqstat, NULL) != 0) {
perror(ERROR_PREFIX "mq_setattr()");
failure = 1;
}
if (mq_getattr(mqdes, &nmqstat) == -1) {
perror(ERROR_PREFIX "mq_getattr()");
unresolved = 1;
}
if ((nmqstat.mq_maxmsg == mqstat.mq_maxmsg)||
(nmqstat.mq_msgsize == mqstat.mq_msgsize)||
(nmqstat.mq_curmsgs == mqstat.mq_curmsgs)) {
failure = 1;
}
mq_close(mqdes);
mq_unlink(mqname);
if (failure == 1) {
printf("Test FAILED\n");
return PTS_FAIL;
}
if (unresolved == 1) {
printf("Test UNRESOLVED\n");
return PTS_UNRESOLVED;
}
printf("Test PASSED \n");
return PTS_PASS;
}
void testValues() {
f = 2;
mqd_t mq = mq_open(anystring(), anyint());
struct mq_attr attrs;
struct mq_attr oattrs;
mq_setattr(mq, &attrs, &oattrs);
//@ assert f == 2;
//@ assert vacuous: \false;
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
struct mq_attr mqstat, nmqstat;
int unresolved = 0;
int failure = 0;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t)-1) {
perror("mq_open() did not return success");
return PTS_UNRESOLVED;
}
memset(&mqstat,0,sizeof(mqstat));
memset(&nmqstat,0,sizeof(nmqstat));
if (mq_getattr(mqdes, &mqstat) == -1) {
perror(ERROR_PREFIX "mq_getattr");
unresolved = 1;
}
mqstat.mq_flags |= MQFLAGS;
if (mq_setattr(mqdes, &mqstat, NULL) != 0) {
perror(ERROR_PREFIX "mq_setattr");
failure = 1;
}
if (mq_getattr(mqdes, &nmqstat) == -1) {
perror(ERROR_PREFIX "mq_getattr");
unresolved = 1;
}
mq_close(mqdes);
if (mq_unlink(mqname) != 0) {
perror(ERROR_PREFIX "mq_unlink");
return PTS_UNRESOLVED;
}
if (nmqstat.mq_flags != mqstat.mq_flags) {
printf("FAIL: mq_flags getted is %ld , while mq_flags "
"setted is %ld\n", nmqstat.mq_flags, mqstat.mq_flags);
failure = 1;
}
if (failure == 1) {
printf("Test FAILED\n");
return PTS_FAIL;
}
if (unresolved == 1) {
printf("Test UNRESOLVED\n");
return PTS_UNRESOLVED;
}
printf("Test PASSED \n");
return PTS_PASS;
}
/*
* call-seq:
* mq.attr = POSIX_MQ::Attr(IO::NONBLOCK) => mq_attr
*
* Only the IO::NONBLOCK flag may be set or unset (zero) in this manner.
* See the mq_setattr(3) manpage for more details.
*
* Consider using the POSIX_MQ#nonblock= method as it is easier and
* more natural to use.
*/
static VALUE setattr(VALUE self, VALUE astruct)
{
struct posix_mq *mq = get(self, 1);
struct mq_attr newattr;
rstruct2mqattr(&newattr, astruct, 0);
if (mq_setattr(mq->des, &newattr, NULL) < 0)
rb_sys_fail("mq_setattr");
return astruct;
}
void mqueue_check_functions(mqd_t m)
{
(void)mq_close(m);
(void)mq_getattr(m, (struct mq_attr *)0);
(void)mq_notify(m, (const struct sigevent *)0);
(void)mq_open((const char *)0, 0, 0);
(void)mq_receive(m, (char*)0, (size_t)0, (unsigned*)0);
(void)mq_send(m, (const char *)0, (size_t)0, (unsigned)0);
(void)mq_setattr(m, (const struct mq_attr *)0, (struct mq_attr *)0);
(void)mq_timedreceive(m, (char*)0, (size_t)0, (unsigned*)0, (const struct timespec*)0);
(void)mq_timedsend(m, (const char *)0, (size_t)0, (unsigned)0, (const struct timespec*)0);
(void)mq_unlink((const char *)0);
}
int main()
{
char mqname[NAMESIZE];
mqd_t mqdes;
struct mq_attr mqstat, nmqstat;
int unresolved = 0;
int failure = 0;
sprintf(mqname, "/" FUNCTION "_" TEST "_%d", getpid());
mqdes = mq_open(mqname, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR, 0);
if (mqdes == (mqd_t)-1) {
perror(ERROR_PREFIX "mq_open()");
return PTS_UNRESOLVED;
}
if (mq_unlink(mqname) != 0) {
perror(ERROR_PREFIX "mq_unlink()");
return PTS_UNRESOLVED;
}
mqdes = mqdes + 1;
memset(&mqstat,0,sizeof(mqstat));
memset(&nmqstat,0,sizeof(nmqstat));
nmqstat.mq_flags = MQFLAGS;
if (mq_setattr(mqdes, &mqstat, NULL) == -1) {
if (EBADF != errno) {
printf("errno != EBADF \n");
failure = 1;
}
}
else {
printf("Test FAILED\n");
failure = 1;
}
mq_close(mqdes);
mq_unlink(mqname);
if (failure == 1) {
printf("Test FAILED\n");
return PTS_FAIL;
}
if (unresolved == 1) {
printf("Test UNRESOLVED\n");
return PTS_UNRESOLVED;
}
printf("Test PASSED \n");
return PTS_PASS;
}
static void
fct (union sigval s)
{
/* Put the mq in non-blocking mode. */
struct mq_attr attr;
if (mq_getattr (m, &attr) != 0)
{
printf ("%s: mq_getattr failed: %m\n", __FUNCTION__);
exit (1);
}
attr.mq_flags |= O_NONBLOCK;
if (mq_setattr (m, &attr, NULL) != 0)
{
printf ("%s: mq_setattr failed: %m\n", __FUNCTION__);
exit (1);
}
/* Check the values. */
if (attr.mq_maxmsg != MAXMSG)
{
printf ("%s: mq_maxmsg wrong: is %ld, expecte %d\n",
__FUNCTION__, attr.mq_maxmsg, MAXMSG);
exit (1);
}
if (attr.mq_msgsize != MAXMSG)
{
printf ("%s: mq_msgsize wrong: is %ld, expecte %d\n",
__FUNCTION__, attr.mq_msgsize, MSGSIZE);
exit (1);
}
/* Read the message. */
char buf[attr.mq_msgsize];
ssize_t n = TEMP_FAILURE_RETRY (mq_receive (m, buf, attr.mq_msgsize, NULL));
if (n != sizeof (message))
{
printf ("%s: length of message wrong: is %zd, expected %zu\n",
__FUNCTION__, n, sizeof (message));
exit (1);
}
if (memcmp (buf, message, sizeof (message)) != 0)
{
printf ("%s: message wrong: is \"%s\", expected \"%s\"\n",
__FUNCTION__, buf, message);
exit (1);
}
exit (UNIQUE);
}
/*
* call-seq:
* mq.nonblock = boolean => boolean
*
* Enables or disables non-blocking operation for the message queue
* descriptor. Errno::EAGAIN will be raised in situations where
* the queue would block. This is not compatible with +timeout+
* arguments to POSIX_MQ#send and POSIX_MQ#receive.
*/
static VALUE setnonblock(VALUE self, VALUE nb)
{
struct mq_attr newattr;
struct posix_mq *mq = get(self, 1);
if (nb == Qtrue)
newattr.mq_flags = O_NONBLOCK;
else if (nb == Qfalse)
newattr.mq_flags = 0;
else
rb_raise(rb_eArgError, "must be true or false");
if (mq_setattr(mq->des, &newattr, &mq->attr) < 0)
rb_sys_fail("mq_setattr");
mq->attr.mq_flags = newattr.mq_flags;
return nb;
}
int main(int argc, char *argv[]) {
mqd_t myqueue;
struct mq_attr wanted_attrs, actual_attrs;
/* filling the attribute structure */
wanted_attrs.mq_flags = 0; /* no exceptional behavior (just O_NONBLOCK currently available) */
wanted_attrs.mq_maxmsg = 100; /* room for at most 100 messages in the queue */
wanted_attrs.mq_msgsize = MAX_QMSG_SIZE; /* maximum size of a message */
wanted_attrs.mq_curmsgs = 123; /* this (current number of messages) will be ignored */
/* mq_open() for creating a new queue (using default attributes) */
myqueue = mq_open(MSGQOBJ_NAME, O_RDWR | O_CREAT | O_EXCL, S_IRWXU | S_IRWXG, &wanted_attrs);
if (myqueue == (mqd_t)-1) {
perror("In mq_open()");
exit(1);
}
printf("Message queue created.\n");
/* getting queue attributes after creation -- mq_getattr() */
mq_getattr(myqueue, &actual_attrs);
printf("Attributes right after queue creation:\n\t- non blocking flag: %d\n\t- maximum number of messages: %ld\n\t- maximum size of a message: %ld\n\t- current number of messages: %ld\n", (actual_attrs.mq_flags == 0 ? 0 : 1), actual_attrs.mq_maxmsg, actual_attrs.mq_msgsize, actual_attrs.mq_curmsgs);
/* building the structure again for modifying the existent queue */
wanted_attrs.mq_flags = O_NONBLOCK;
wanted_attrs.mq_maxmsg = 350; /* this will be ignored by mq_setattr() */
wanted_attrs.mq_msgsize = MAX_QMSG_SIZE; /* this will be ignored by mq_setattr() */
wanted_attrs.mq_curmsgs = 123; /* this will be ignored by mq_setattr() */
/* trying to later set different attributes on the queue -- mq_setattr() */
mq_setattr(myqueue, &wanted_attrs, NULL);
/* getting queue attributes after creation */
mq_getattr(myqueue, &actual_attrs);
printf("Attributes after setattr():\n\t- non blocking flag: %d\n\t- maximum number of messages: %ld\n\t- maximum size of a message: %ld\n\t- current number of messages: %ld\n", (actual_attrs.mq_flags == 0 ? 0 : 1), actual_attrs.mq_maxmsg, actual_attrs.mq_msgsize, actual_attrs.mq_curmsgs);
/* removing the queue from the system -- mq_unlink() */
mq_unlink(MSGQOBJ_NAME);
return 0;
}
int main(int argc, char *argv[])
{
if(argc < 4) {
printf("Number of arguments for the mq_setattr process is less...\n");
printf("Format:./mq_setattr <queuename> <queue-size> <blocking(1)/nonblocking(0)>...\n");
return -1;
}
//queue_name,queue_size,blocking/non-blocking
char queue_name[30];
strcpy(queue_name,argv[1]);
message m1;
m1.m1_p1 = queue_name;
//queue_size
m1.m1_i1 = atoi(argv[2]);
//blocking-nonblocking
m1.m1_i2 = atoi(argv[3]);
mq_setattr(m1);
return 0;
}
int attrEx
(
char * name
)
{
mqd_t mqPXId; /* mq descriptor */
struct mq_attr attr; /* queue attribute structure */
struct mq_attr oldAttr; /* old queue attributes */
char buffer[MSG_SIZE];
int prio;
/* create read write queue that is blocking */
attr.mq_flags = 0;
attr.mq_maxmsg = 1;
attr.mq_msgsize = 16;
if ((mqPXId = mq_open (name, O_CREAT | O_RDWR , 0, &attr))
== (mqd_t) -1)
return (ERROR);
else
printf ("mq_open with non-block succeeded\n");
/* change attributes on queue - turn on non-blocking */
attr.mq_flags = O_NONBLOCK;
if (mq_setattr (mqPXId, &attr, &oldAttr) == -1)
return (ERROR);
else
{
/* paranoia check - oldAttr should not include non-blocking. */
if (oldAttr.mq_flags & O_NONBLOCK)
return (ERROR);
else
printf ("mq_setattr turning on non-blocking succeeded\n");
}
/* try receiving - there are no messages but this shouldn't block */
if (mq_receive (mqPXId, buffer, MSG_SIZE, &prio) == -1)
{
if (errno != EAGAIN)
return (ERROR);
else
printf ("mq_receive with non-blocking didn't block on empty queue\n");
}
else
return (ERROR);
/* use mq_getattr to verify success */
if (mq_getattr (mqPXId, &oldAttr) == -1)
return (ERROR);
else
{
/* test that we got the values we think we should */
if (!(oldAttr.mq_flags & O_NONBLOCK) || (oldAttr.mq_curmsgs != 0))
return (ERROR);
else
printf ("queue attributes are:\n\tblocking is %s\n\t message size is: %d\n\t max messages in queue: %d\n\t no. of current msgs in queue: %d\n", oldAttr.mq_flags & O_NONBLOCK ? "on" : "off",oldAttr.mq_msgsize, oldAttr.mq_maxmsg,oldAttr.mq_curmsgs);
}
/* clean up - close and unlink mq */
if (mq_unlink (name) == -1)
return (ERROR);
if (mq_close (mqPXId) == -1)
return (ERROR);
return (OK);
}
int mq_getattr(mqd_t mqd, struct mq_attr *attr)
{
return mq_setattr(mqd, 0, attr);
}
void *doSmall(void *arg) {
bool runFlag=true;
// char *queueName ;
mqd_t mq;
struct mq_attr attr;
ssize_t len;
struct cmdMessage buffer;
// char *res;
struct linuxParser *p;
bool ff;
struct Small *myTable=arg;
// This lock is held by this threads parent.
// Once the parent has completed its setup it will release the lock, and
// then we can continue.
//
pthread_mutex_lock(&lock);
fprintf(stderr,"Started\n");
queueName = dbLookup(myTable,"QNAME");
if(!queueName) {
ff=addRecord(myTable,"QNAME","/atlast");
if(ff) {
fprintf(stderr,"db install faulure, fatal error\n");
exit(1);
}
queueName = dbLookup(myTable,"QNAME");
}
attr.mq_flags = 0;
attr.mq_maxmsg = 10;
printf("size %d\n", sizeof(struct cmdMessage));
attr.mq_msgsize = sizeof(struct cmdMessage);
attr.mq_curmsgs = 0;
mq = mq_open(queueName, O_CREAT | O_RDONLY, 0644, &attr);
if( (mqd_t)-1 == mq) {
perror("mq_open");
if(errno == ENOSYS) {
fprintf(stderr,"Fatal ERROR\n");
exit(1);
}
}
mq_setattr(mq, &attr,NULL);
p=newParser(myTable);
setIam(p,queueName);
while(runFlag) {
len = mq_receive(mq, &buffer, sizeof(buffer), NULL);
if( len < 0) {
perror("mq_receive");
} else {
ff=cmdParse(p,&buffer,NULL);
}
}
}
void message_read(MSGQ_info ** msgq_info,int no_of_msgq) {
char buf[MSGSIZE+1]={0};
struct mq_attr attr, old_attr;
fd_set trans_fdset;
struct timeval timeout;
struct timeval start,end,diff;
FD_ZERO(&trans_fdset);
trans_fdset = read_fdset;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
int q_count=0;
int ret=0;
int i=0,prio;
memset(&attr,0,sizeof(struct mq_attr));
memset(&old_attr,0,sizeof(struct mq_attr));
while(1) {
gettimeofday(&start,NULL);
if((ret = select((mq_info[no_of_msgq-1]).mq_des +1 ,&trans_fdset,NULL,NULL,NULL))>0) {
for (i=0;i<no_of_msgq;i++) {
PRINT(LOG_CRITICAL,"QUEUE No:%d\n",i);
if(FD_ISSET(mq_info[i].mq_des,&trans_fdset)) {
PRINT(LOG_DEBUG,"QUEUE No:%d\n",i);
mq_getattr (mq_info[i].mq_des, &attr);
printf ("%d messages are currently on the queue.\n",
attr.mq_curmsgs);
if ( attr.mq_curmsgs != 0) {
/*
There are some messages on this queue.
First set the queue to not block any calls
*/
attr.mq_flags = O_NONBLOCK ;//MQ_NONBLOCK;
mq_setattr (mq_info[i].mq_des, &attr, &old_attr);
PRINT(LOG_CRITICAL,"\n %d %d ",old_attr.mq_maxmsg,old_attr.mq_msgsize);
while (mq_receive (mq_info[i].mq_des, &buf, MSGSIZE+1, &prio) != -1) {
MSG_DATA *msg =(MSG_DATA *)&buf;
msg->data[msg->len]='\0';
PRINT(LOG_CRITICAL,"Received a message with priority %d.\n", prio);
PRINT(LOG_CRITICAL,"Message %s.:length %d\n", msg->data,msg->len);
memset(buf,0,sizeof(buf));
}
}
if (errno != EAGAIN) {
perror ("mq_receive()");
exit (-1);
}
/* Now restore the old attributes */
FD_ZERO(&trans_fdset);
mq_setattr (mq_info[i].mq_des, &old_attr, 0);
}
}
trans_fdset = read_fdset;
}
gettimeofday(&end,NULL);
diff = time_diff(start,end);
printf ("DIFF::%llu.%.6llu",(unsigned long long)diff.tv_sec, (unsigned long long)diff.tv_usec);
}
}
int main(void)
{
samplemsgbuf buf;
int retval = 0;
mqd_t msqid;
struct mq_attr qattr;
/*
setting the attribute structure before creating the queue
setting of mq_flags is not required, that is beign taken
from the 2nd parameter to mq_open call
*/
qattr.mq_msgsize = MSG_SIZE;
qattr.mq_curmsgs = CUR_MSGS;
qattr.mq_maxmsg = MAX_MSGS;
if (-1 == (msqid = mq_open(MQ_NAME, OPEN_FLAG, OPEN_MODE, &qattr)))
{
perror("mq_open");
exit(-1);
}
printf("reciever: ready to receive messages.\n");
if (-1 == mq_getattr(msqid, &qattr))
{
perror("mq_getattr");
exit(-1);
}
printf("%d : %d : %d\n", qattr.mq_msgsize, qattr.mq_curmsgs, qattr.mq_maxmsg);
/*
The following call to change the attribute of the message queue does not
work. The mq_msgsize parameter can't be changed. Only mq_flags can be
changed by mq_setattr call
*/
qattr.mq_msgsize = MSG_SIZE;
if (-1 == mq_setattr(msqid, &qattr, NULL))
{
perror("mq_getattr");
exit(-1);
}
if (-1 == mq_getattr(msqid, &qattr))
{
perror("mq_getattr");
exit(-1);
}
printf("%d : %d : %d\n", qattr.mq_msgsize, qattr.mq_curmsgs, qattr.mq_maxmsg);
/*
Install signal handler for cleanup as the receiver is in an infinite loop
return from signal call, the old signal handler function is ignored
*/
signal(SIGINT, cleanup);
if (0 != errno)
{
printf("SIGINT set error %d \n", errno);
}
/*
receiver started, it quits only if the queue has been removed
*/
for(;;)
{
/*
Messages with any priority can be received
*/
if (0 <= (retval = mq_receive(msqid, buf, MSG_SIZE, NULL)))
{
buf[retval] = '\0';
printf("receiver: \"%s\"\n", buf);
}
else
{
perror("msg queue receive");
break;
}
}
mq_close(msqid);
mq_unlink(MQ_NAME);
return 0;
}
void runFailure() {
mqd_t mq = mq_open(anystring(), anyint());
struct mq_attr attrs;
mq_setattr(mq, NULL, &attrs);
}
void runSuccess() {
mqd_t mq = mq_open(anystring(), anyint());
struct mq_attr attrs;
struct mq_attr oattrs;
mq_setattr(mq, &attrs, &oattrs);
}
/* Query status and attributes of message queue MQDES. */
int
mq_getattr (mqd_t mqdes, struct mq_attr *mqstat)
{
return mq_setattr (mqdes, NULL, mqstat);
}
static int
do_test (void)
{
int result = 0;
char name[sizeof "/tst-mqueue2-" + sizeof (pid_t) * 3];
snprintf (name, sizeof (name), "/tst-mqueue2-%u", getpid ());
struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 };
mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q == (mqd_t) -1)
{
printf ("mq_open failed with: %m\n");
return result;
}
else
add_temp_mq (name);
mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q2 != (mqd_t) -1)
{
puts ("mq_open with O_EXCL unexpectedly succeeded");
result = 1;
}
else if (errno != EEXIST)
{
printf ("mq_open did not fail with EEXIST: %m\n");
result = 1;
}
char name2[sizeof "/tst-mqueue2-2-" + sizeof (pid_t) * 3];
snprintf (name2, sizeof (name2), "/tst-mqueue2-2-%u", getpid ());
attr.mq_maxmsg = -2;
q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q2 != (mqd_t) -1)
{
puts ("mq_open with invalid mq_maxmsg unexpectedly succeeded");
add_temp_mq (name2);
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_open with invalid mq_maxmsg did not fail with "
"EINVAL: %m\n");
result = 1;
}
attr.mq_maxmsg = 2;
attr.mq_msgsize = -56;
q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q2 != (mqd_t) -1)
{
puts ("mq_open with invalid mq_msgsize unexpectedly succeeded");
add_temp_mq (name2);
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_open with invalid mq_msgsize did not fail with "
"EINVAL: %m\n");
result = 1;
}
char buf[3];
struct timespec ts;
if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
ts.tv_sec += 10;
else
{
ts.tv_sec = time (NULL) + 10;
ts.tv_nsec = 0;
}
if (mq_timedreceive (q, buf, 1, NULL, &ts) == 0)
{
puts ("mq_timedreceive with too small msg_len did not fail");
result = 1;
}
else if (errno != EMSGSIZE)
{
printf ("mq_timedreceive with too small msg_len did not fail with "
"EMSGSIZE: %m\n");
result = 1;
}
ts.tv_nsec = -1;
if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
{
puts ("mq_timedreceive with negative tv_nsec did not fail");
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_timedreceive with negative tv_nsec did not fail with "
"EINVAL: %m\n");
result = 1;
}
ts.tv_nsec = 1000000000;
if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
{
puts ("mq_timedreceive with tv_nsec >= 1000000000 did not fail");
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_timedreceive with tv_nsec >= 1000000000 did not fail with "
"EINVAL: %m\n");
result = 1;
}
struct sigaction sa = { .sa_handler = alrm_handler, .sa_flags = 0 };
sigemptyset (&sa.sa_mask);
sigaction (SIGALRM, &sa, NULL);
struct itimerval it = { .it_value = { .tv_sec = 1 } };
setitimer (ITIMER_REAL, &it, NULL);
if (mq_receive (q, buf, 2, NULL) == 0)
{
puts ("mq_receive on empty queue did not block");
result = 1;
}
else if (errno != EINTR)
{
printf ("mq_receive on empty queue did not fail with EINTR: %m\n");
result = 1;
}
setitimer (ITIMER_REAL, &it, NULL);
ts.tv_nsec = 0;
if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
{
puts ("mq_timedreceive on empty queue did not block");
result = 1;
}
else if (errno != EINTR)
{
printf ("mq_timedreceive on empty queue did not fail with EINTR: %m\n");
result = 1;
}
buf[0] = '6';
buf[1] = '7';
if (mq_send (q, buf, 2, 3) != 0
|| (buf[0] = '8', mq_send (q, buf, 1, 4) != 0))
{
printf ("mq_send failed: %m\n");
result = 1;
}
memset (buf, ' ', sizeof (buf));
unsigned int prio;
ssize_t rets = mq_receive (q, buf, 3, &prio);
if (rets != 1)
{
if (rets == -1)
printf ("mq_receive failed: %m\n");
else
printf ("mq_receive returned %zd != 1\n", rets);
result = 1;
}
else if (prio != 4 || memcmp (buf, "8 ", 3) != 0)
{
printf ("mq_receive prio %u (4) buf \"%c%c%c\" (\"8 \")\n",
prio, buf[0], buf[1], buf[2]);
result = 1;
}
rets = mq_receive (q, buf, 2, NULL);
if (rets != 2)
{
if (rets == -1)
printf ("mq_receive failed: %m\n");
else
printf ("mq_receive returned %zd != 2\n", rets);
result = 1;
}
else if (memcmp (buf, "67 ", 3) != 0)
{
printf ("mq_receive buf \"%c%c%c\" != \"67 \"\n",
buf[0], buf[1], buf[2]);
result = 1;
}
buf[0] = '2';
buf[1] = '1';
if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
ts.tv_sec = time (NULL);
ts.tv_nsec = -1000000001;
if ((mq_timedsend (q, buf, 2, 5, &ts) != 0
&& (errno != EINVAL || mq_send (q, buf, 2, 5) != 0))
|| (buf[0] = '3', ts.tv_nsec = -ts.tv_nsec,
(mq_timedsend (q, buf, 1, 4, &ts) != 0
&& (errno != EINVAL || mq_send (q, buf, 1, 4) != 0))))
{
printf ("mq_timedsend failed: %m\n");
result = 1;
}
buf[0] = '-';
ts.tv_nsec = 1000000001;
if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
{
puts ("mq_timedsend with tv_nsec >= 1000000000 did not fail");
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_timedsend with tv_nsec >= 1000000000 did not fail with "
"EINVAL: %m\n");
result = 1;
}
ts.tv_nsec = -2;
if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
{
puts ("mq_timedsend with negative tv_nsec did not fail");
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_timedsend with megatove tv_nsec did not fail with "
"EINVAL: %m\n");
result = 1;
}
setitimer (ITIMER_REAL, &it, NULL);
if (mq_send (q, buf, 2, 8) == 0)
{
puts ("mq_send on full queue did not block");
result = 1;
}
else if (errno != EINTR)
{
printf ("mq_send on full queue did not fail with EINTR: %m\n");
result = 1;
}
setitimer (ITIMER_REAL, &it, NULL);
ts.tv_sec += 10;
ts.tv_nsec = 0;
if (mq_timedsend (q, buf, 2, 7, &ts) == 0)
{
puts ("mq_timedsend on full queue did not block");
result = 1;
}
else if (errno != EINTR)
{
printf ("mq_timedsend on full queue did not fail with EINTR: %m\n");
result = 1;
}
memset (buf, ' ', sizeof (buf));
if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
ts.tv_sec = time (NULL);
ts.tv_nsec = -1000000001;
rets = mq_timedreceive (q, buf, 2, &prio, &ts);
if (rets == -1 && errno == EINVAL)
rets = mq_receive (q, buf, 2, &prio);
if (rets != 2)
{
if (rets == -1)
printf ("mq_timedreceive failed: %m\n");
else
printf ("mq_timedreceive returned %zd != 2\n", rets);
result = 1;
}
else if (prio != 5 || memcmp (buf, "21 ", 3) != 0)
{
printf ("mq_timedreceive prio %u (5) buf \"%c%c%c\" (\"21 \")\n",
prio, buf[0], buf[1], buf[2]);
result = 1;
}
if (mq_receive (q, buf, 1, NULL) == 0)
{
puts ("mq_receive with too small msg_len did not fail");
result = 1;
}
else if (errno != EMSGSIZE)
{
printf ("mq_receive with too small msg_len did not fail with "
"EMSGSIZE: %m\n");
result = 1;
}
ts.tv_nsec = -ts.tv_nsec;
rets = mq_timedreceive (q, buf, 2, NULL, &ts);
if (rets == -1 && errno == EINVAL)
rets = mq_receive (q, buf, 2, NULL);
if (rets != 1)
{
if (rets == -1)
printf ("mq_timedreceive failed: %m\n");
else
printf ("mq_timedreceive returned %zd != 1\n", rets);
result = 1;
}
else if (memcmp (buf, "31 ", 3) != 0)
{
printf ("mq_timedreceive buf \"%c%c%c\" != \"31 \"\n",
buf[0], buf[1], buf[2]);
result = 1;
}
if (mq_send (q, "", 0, 2) != 0)
{
printf ("mq_send with msg_len 0 failed: %m\n");
result = 1;
}
rets = mq_receive (q, buf, 2, &prio);
if (rets)
{
if (rets == -1)
printf ("mq_receive failed: %m\n");
else
printf ("mq_receive returned %zd != 0\n", rets);
result = 1;
}
long mq_prio_max = sysconf (_SC_MQ_PRIO_MAX);
if (mq_prio_max > 0 && (unsigned int) mq_prio_max == mq_prio_max)
{
if (mq_send (q, buf, 1, mq_prio_max) == 0)
{
puts ("mq_send with MQ_PRIO_MAX priority unpexpectedly succeeded");
result = 1;
}
else if (errno != EINVAL)
{
printf ("mq_send with MQ_PRIO_MAX priority did not fail with "
"EINVAL: %m\n");
result = 1;
}
if (mq_send (q, buf, 1, mq_prio_max - 1) != 0)
{
printf ("mq_send with MQ_PRIO_MAX-1 priority failed: %m\n");
result = 1;
}
}
if (mq_unlink (name) != 0)
{
printf ("mq_unlink failed: %m\n");
result = 1;
}
q2 = mq_open (name, O_RDWR);
if (q2 != (mqd_t) -1)
{
printf ("mq_open of unlinked %s without O_CREAT unexpectedly"
"succeeded\n", name);
result = 1;
}
else if (errno != ENOENT)
{
printf ("mq_open of unlinked %s without O_CREAT did not fail with "
"ENOENT: %m\n", name);
result = 1;
}
if (mq_close (q) != 0)
{
printf ("mq_close in parent failed: %m\n");
result = 1;
}
if (mq_receive (q, buf, 2, NULL) == 0)
{
puts ("mq_receive on invalid mqd_t did not fail");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_receive on invalid mqd_t did not fail with EBADF: %m\n");
result = 1;
}
if (mq_send (q, buf, 1, 2) == 0)
{
puts ("mq_send on invalid mqd_t did not fail");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_send on invalid mqd_t did not fail with EBADF: %m\n");
result = 1;
}
if (mq_getattr (q, &attr) == 0)
{
puts ("mq_getattr on invalid mqd_t did not fail");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_getattr on invalid mqd_t did not fail with EBADF: %m\n");
result = 1;
}
memset (&attr, 0, sizeof (attr));
if (mq_setattr (q, &attr, NULL) == 0)
{
puts ("mq_setattr on invalid mqd_t did not fail");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_setattr on invalid mqd_t did not fail with EBADF: %m\n");
result = 1;
}
if (mq_unlink ("/tst-mqueue2-which-should-never-exist") != -1)
{
puts ("mq_unlink of non-existant message queue unexpectedly succeeded");
result = 1;
}
else if (errno != ENOENT)
{
printf ("mq_unlink of non-existant message queue did not fail with "
"ENOENT: %m\n");
result = 1;
}
return result;
}
int main (int argc, char *argv[]) {
struct mq_attr attr, old_attr, new_attr; // To store queue attributes
mqd_t mqdes; // Message queue descriptors
int ret;
if( argc < 2){
printf("Usage: ./a.out < string to be send through message queue >\n");
exit(0);
}
strcpy(buf_send,argv[1]);
mqdes = Mq_open();
if(mqdes < 0){
exit(-1);
}
/* Function used to get the attributes of the posix message queue */
ret = mq_getattr(mqdes, &attr);
if(mqdes == -1){
printf("Error in getting attribute from 'Prakash' message queue\n");
printf("Error number = %d\n",errno);
exit(errno);;
} else {
printf("\n============================================================\n\n");
printf("Success in getting attribute from 'Prakash' message queue\n");
printf("Maxmsg = %ld\n",attr.mq_maxmsg);
printf("Maxsize = %ld\n",attr.mq_msgsize);
printf("flag = %ld\n",attr.mq_flags);
printf("\n============================================================\n");
}
/* Function used to send the message on the message queue */
ret = mq_send (mqdes, buf_send, sizeof(buf_send), 1);
if(ret == -1){
printf("Error in sending the buffer\n");
printf("Error number = %d\n",errno);
exit(errno);
} else {
printf(" Message send : [ %s ]\n",buf_send);
}
/* Function used to receive the message from the message queue
The 3rd argument of the mesasage queue must be greater than mq_msgsize
value. If not we will get a error " Message too long" */
ret = mq_receive(mqdes, buf_recv, attr.mq_msgsize + 1 , 0);
if(ret == -1){
perror("mq_receive");
printf("Error in receiving the buffer\n");
printf("Error number = %d\n",errno);
exit(errno);
} else {
printf(" Message received : [ %s ]\n",buf_recv);
}
/* Trying to change the value of the mq_attr structure using
mq_setattr() function call */
new_attr.mq_maxmsg = 11; // These feilds will get innored as they can't be changed.
new_attr.mq_msgsize = 4096; // These feilds will get innored as they can't be changed.
new_attr.mq_flags = O_NONBLOCK; // The only flag which can be changed by mq_setattr fucntion
ret = mq_setattr(mqdes, &new_attr,&old_attr);
if(mqdes == -1){
printf("Error in setting attribute to 'Prakash' message queue\n");
printf("Error number = %d\n",errno);
exit(errno);;
}
/* Verifying the set value in the above step */
ret = mq_getattr(mqdes, &attr);
if(mqdes == -1){
printf("Error in getting attribute from 'Prakash' message queue\n");
printf("Error number = %d\n",errno);
exit(errno);;
} else {
printf("\n============================================================\n\n");
printf("Success in getting attribute from 'Prakash' message queue\n");
printf("Maxmsg = %ld\n",attr.mq_maxmsg);
printf("Maxsize = %ld\n",attr.mq_msgsize);
printf("flag = %ld\n",attr.mq_flags);
printf("mq_curmsgs %ld\n",attr.mq_curmsgs);
printf("\n============================================================\n");
}
/* Closing the message queue discriptor
Note: Only closing the discriptor, not removing the message queue */
ret = mq_close(mqdes);
if(ret == -1){
printf("Error in closing the 'Prakash' message queue\n");
printf("Error number = %d\n",errno);
exit(errno);
}
/* removing the message queue from the file system */
ret = mq_unlink (NAME);
if(ret == -1){
printf("Error in removng the 'Prakash' message queue\n");
printf("Error number = %d\n",errno);
exit(errno);
}
return 0;
}
int main(int argc, char **argv)
{
struct mq_attr mqa;
mqd_t mqdw;
mqd_t mqdr;
char buffer[MSGSIZEMAX];
unsigned int priority;
int len;
mqa.mq_maxmsg = MSGMAX;
mqa.mq_msgsize = MSGSIZEMAX;
if ((mqdw = mq_open("/valgrind-mqueue", O_CREAT|O_EXCL|O_WRONLY, 0600, &mqa)) < 0)
{
if (errno == ENOSYS)
exit(0);
perror("mq_open");
exit(1);
}
if ((mqdr = mq_open("/valgrind-mqueue", O_RDONLY)) < 0)
{
perror("mq_open");
mq_unlink("/valgrind-mqueue");
mq_close(mqdw);
exit(1);
}
if (mq_unlink("/valgrind-mqueue") < 0)
{
perror("mq_unlink");
mq_close(mqdw);
mq_close(mqdr);
exit(1);
}
if (mq_send(mqdw, "PING", 4, 0) < 0)
{
perror("mq_send");
mq_close(mqdr);
mq_close(mqdw);
exit(1);
}
if ((len = mq_receive(mqdr, buffer, sizeof(buffer), &priority)) < 0)
{
perror("mq_receive");
mq_close(mqdr);
mq_close(mqdw);
exit(1);
}
#if !defined(VGO_solaris)
/* On Solaris, there is no existing notification registration. */
if (mq_notify(mqdr, NULL) < 0)
{
perror("mq_notify");
mq_close(mqdr);
mq_close(mqdw);
exit(1);
}
#endif /* !VGO_solaris */
if (len != 4 || memcmp(buffer, "PING", 4) != 0)
{
fprintf(stderr, "Message corrupt!");
}
if (mq_getattr(mqdr, &mqa) < 0)
{
perror("mq_getattr");
mq_close(mqdr);
mq_close(mqdw);
exit(1);
}
if (mq_setattr(mqdw, &mqa, &mqa) < 0)
{
perror("mq_setattr");
mq_close(mqdr);
mq_close(mqdw);
exit(1);
}
if (mq_close(mqdr) < 0)
{
perror("mq_close");
mq_close(mqdw);
exit(1);
}
if (mq_close(mqdw) < 0)
{
perror("mq_close");
exit(1);
}
exit(0);
}
int
main(void)
{
mqd_t q1, q2;
char buf[20];
ssize_t recvlen;
unsigned int prio;
struct mq_attr attr, oattr;
mode_t mode;
int err;
CYG_TEST_INIT();
CYG_TEST_INFO( "Starting POSIX message test 1" );
q1 = mq_open( "/mq1", O_RDWR );
CYG_TEST_PASS_FAIL( q1 == (mqd_t)-1, "error for non-existent queue" );
CYG_TEST_PASS_FAIL( ENOENT == errno,
"errno correct for non-existent queue" );
attr.mq_flags = 0;
attr.mq_maxmsg = 4;
attr.mq_msgsize = 20;
mode = S_IRWXU|S_IRWXG|S_IRWXO; // rwx for all
q1 = mq_open( "/mq1", O_CREAT|O_NONBLOCK|O_WRONLY, mode, &attr );
CYG_TEST_PASS_FAIL( q1 != (mqd_t)-1, "simple mq_open (write only)" );
err = mq_getattr( q1, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY != (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY == (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(0 == attr.mq_curmsgs ), "getattr attributes correct" );
err = mq_send( q1, "Vik is brill", sizeof("Vik is brill"), 10 );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_send" );
err = mq_getattr( q1, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr after send" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY != (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY == (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(1 == attr.mq_curmsgs ),
"getattr attributes correct #2" );
q2 = mq_open( "/mq1", O_RDONLY|O_CREAT|O_EXCL );
CYG_TEST_PASS_FAIL( q2 == (mqd_t)-1,
"error for exclusive open of existing queue" );
CYG_TEST_PASS_FAIL( EEXIST == errno,
"errno correct for exclusive open of existing queue" );
q2 = mq_open( "/mq1", O_RDONLY );
CYG_TEST_PASS_FAIL( q2 != (mqd_t)-1, "simple mq_open (read only)" );
err = mq_getattr( q2, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr, different mqd_t" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK != (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY == (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY != (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(1 == attr.mq_curmsgs ),
"getattr attributes correct #3" );
err = mq_close( q2 );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_close" );
q2 = mq_open( "/mq1", O_RDONLY );
CYG_TEST_PASS_FAIL( q2 != (mqd_t)-1, "mq_open reopen (read only)" );
err = mq_getattr( q2, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr, different mqd_t" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK != (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY == (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY != (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(1 == attr.mq_curmsgs ),
"getattr attributes correct #4" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == sizeof("Vik is brill"),
"receive message length" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "Vik is brill",
sizeof("Vik is brill")),
"received message data intact" );
CYG_TEST_PASS_FAIL( 10 == prio, "received at correct priority" );
err = mq_getattr( q1, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr after send" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY != (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY == (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(0 == attr.mq_curmsgs ),
"getattr attributes correct #5" );
attr.mq_flags |= O_NONBLOCK;
err = mq_setattr( q2, &attr, &oattr );
CYG_TEST_PASS_FAIL( 0 == err, "mq_setattr O_NONBLOCK" );
CYG_TEST_PASS_FAIL( (4 == oattr.mq_maxmsg) &&
(20 == oattr.mq_msgsize) &&
(O_NONBLOCK != (oattr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY == (oattr.mq_flags & O_RDONLY)) &&
(O_WRONLY != (oattr.mq_flags & O_WRONLY)) &&
(O_RDWR != (oattr.mq_flags & O_RDWR)) &&
(0 == oattr.mq_curmsgs ),
"old attribute correct" );
err = mq_getattr( q2, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "mq_getattr after O_NONBLOCK" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY == (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY != (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(0 == attr.mq_curmsgs ),
"new attribute correct" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == (ssize_t)-1,
"mq_receive, empty buffer, non-blocking" );
CYG_TEST_PASS_FAIL( EAGAIN == errno,
"errno correct for non-blocking" );
err = mq_send( q2, "foo", sizeof("foo"), 1 );
CYG_TEST_PASS_FAIL( -1 == err, "error on mq_send on read-only descriptor" );
CYG_TEST_PASS_FAIL( EBADF == errno,
"errno correct for mq_send on r/o descriptor" );
err = mq_send( q2, "supercalifragilisticexpealidocious", 21, 2 );
CYG_TEST_PASS_FAIL( -1 == err, "error on mq_send (message too long)" );
CYG_TEST_PASS_FAIL( EMSGSIZE == errno,
"errno correct for mq_send (message too long)" );
err = mq_send( q1, "", sizeof(""), 5 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_send \"\"" );
err = mq_send( q1, "I love Vik", sizeof("I love Vik"), 7 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_send (different priority)" );
err = mq_send( q1, "a lot!", sizeof("a lot!"), 7 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_send (same priority)" );
err = mq_send( q1, "Vik is a babe", sizeof("Vik is a babe"), 6 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_send (middle priority)" );
err = mq_send( q1, "wibble", sizeof("wibble"), 6 );
CYG_TEST_PASS_FAIL( -1 == err, "error on mq_send with full queue" );
CYG_TEST_PASS_FAIL( EAGAIN == errno,
"errno correct for mq_send full queue" );
err = mq_getattr( q2, &attr );
CYG_TEST_PASS_FAIL( 0 == err, "mq_getattr after sends" );
CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&
(20 == attr.mq_msgsize) &&
(O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&
(O_RDONLY == (attr.mq_flags & O_RDONLY)) &&
(O_WRONLY != (attr.mq_flags & O_WRONLY)) &&
(O_RDWR != (attr.mq_flags & O_RDWR)) &&
(4 == attr.mq_curmsgs ),
"getattr attributes correct #5" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == sizeof("I love Vik"),
"receive message length (prioritized) #1" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "I love Vik",
sizeof("I love Vik")),
"received message data intact (prioritized) #1" );
CYG_TEST_PASS_FAIL( 7 == prio,
"received at correct priority (prioritized) #1" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == sizeof("a lot!"),
"receive message length (prioritized) #2" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "a lot!",
sizeof("a lot!")),
"received message data intact (prioritized) #2" );
CYG_TEST_PASS_FAIL( 7 == prio,
"received at correct priority (prioritized) #2" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == sizeof("Vik is a babe"),
"receive message length (prioritized) #3" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "Vik is a babe",
sizeof("Vik is a babe")),
"received message data intact (prioritized) #3" );
CYG_TEST_PASS_FAIL( 6 == prio,
"received at correct priority (prioritized) #3" );
recvlen = mq_receive( q2, buf, 0, &prio );
CYG_TEST_PASS_FAIL( recvlen == (ssize_t)-1,
"mq_receive, zero-sized buffer" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == sizeof(""),
"receive message length (prioritized) #4" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "",
sizeof("")),
"received message data intact (prioritized) #4" );
CYG_TEST_PASS_FAIL( 5 == prio,
"received at correct priority (prioritzed) #4" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == (ssize_t)-1,
"mq_receive, empty buffer, non-blocking #2" );
CYG_TEST_PASS_FAIL( EAGAIN == errno,
"errno correct for non-blocking #2" );
err = mq_send( q1, "12345678901234567890", 20, 15 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_send (before closing)" );
err = mq_unlink( "/foo" );
CYG_TEST_PASS_FAIL( -1 == err, "mq_unlink (wrong name)" );
CYG_TEST_PASS_FAIL( ENOENT == errno,
"errno correct for mq_unlink (wrong name)" );
err = mq_unlink( "/mq1" );
CYG_TEST_PASS_FAIL( 0 == err, "mq_unlink (before closing)" );
err = mq_close( q1 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_close (send descriptor)" );
recvlen = mq_receive( q2, buf, sizeof(buf), &prio );
CYG_TEST_PASS_FAIL( recvlen == 20,
"receive message length (mid close)" );
CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, "12345678901234567890", 20 ),
"received message data intact (mid close)" );
CYG_TEST_PASS_FAIL( 15 == prio,
"received at correct priority (mid close)" );
err = mq_close( q2 );
CYG_TEST_PASS_FAIL( 0 == err, "mq_close (receive descriptor)" );
q1 = mq_open( "/mq1", O_RDONLY );
CYG_TEST_PASS_FAIL( q1 == (mqd_t)-1, "error for non-existent queue" );
CYG_TEST_PASS_FAIL( ENOENT == errno,
"errno correct for non-existent queue" );
CYG_TEST_EXIT("POSIX message test 1");
return 0;
} // main()
void
initialize(iter_t iterations, void* cookie)
{
char c;
state_t * state = (state_t *)cookie;
struct mq_attr attr;
if (iterations) return;
memset(&attr, 0, sizeof(attr));
attr.mq_flags = 0;
attr.mq_maxmsg = 1;
attr.mq_msgsize = 1;
attr.mq_curmsgs = 0;
state->mq = mq_open("/testqueue", O_CREAT | O_RDWR, 0666, &attr);
if (state->mq == -1) {
perror("mq_open");
return;
}
fprintf(stderr, "mq fd: %d\n", state->mq);
mq_getattr(state->mq, &attr);
fprintf(stderr, "attrs\n");
fprintf(stderr, "flags: 0x%x\n", attr.mq_flags);
fprintf(stderr, "maxmsg: %ld\n", attr.mq_maxmsg);
fprintf(stderr, "msgsize: %ld\n", attr.mq_msgsize);
fprintf(stderr, "curmsg: %ld\n", attr.mq_curmsgs);
attr.mq_msgsize = 1;
attr.mq_maxmsg = 1;
if (mq_setattr(state->mq, &attr, NULL) == -1) {
perror("mq_setattr");
return;
}
mq_getattr(state->mq, &attr);
fprintf(stderr, "attrs\n");
fprintf(stderr, "flags: 0x%x\n", attr.mq_flags);
fprintf(stderr, "maxmsg: %ld\n", attr.mq_maxmsg);
fprintf(stderr, "msgsize: %ld\n", attr.mq_msgsize);
fprintf(stderr, "curmsg: %ld\n", attr.mq_curmsgs);
handle_scheduler(benchmp_childid(), 0, 1);
switch (state->pid = fork()) {
case 0:
handle_scheduler(benchmp_childid(), 1, 1);
signal(SIGTERM, exit);
childloop(state->mq);
return;
case -1:
perror("fork");
return;
default:
break;
}
/*
* One time around to make sure both processes are started.
*/
#if 1
{
int snd = 0;
int rcv = 0;
snd = mq_send(state->mq, &c, 1, 0);
rcv = mq_receive(state->mq, buf, sizeof(buf), NULL);
fprintf(stderr, "snd: %d rcv: %d\n", snd, rcv);
/*
if (mq_send(state->mq, &c, 1, 0) != -1 || mq_receive(state->mq, buf, sizeof(buf), NULL) != 1){
perror("(i) read/write on mq");
exit(1);
} */
}
#endif
}
